@article{10_4153_CJM_2004_046_9,
     author = {Matignon, D. and Sayari, N.},
     title = {Non-Orientable {Surfaces} and {Dehn} {Surgeries}},
     journal = {Canadian journal of mathematics},
     pages = {1022--1033},
     year = {2004},
     volume = {56},
     number = {5},
     doi = {10.4153/CJM-2004-046-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2004-046-9/}
}